> My experience with UAV control systems is that scheduling gains with > airspeed is a good idea if you want control over a wide envelope. It > is difficult enough to make the vehicle stable over the entire flight > envelope. If you want anything approaching optimum control, you need > to have gain settings for at least 2 different airspeed regimes. The > discontinuities that cause the "kick" can be eliminated by doing a > smooth interpolation between the gains (rather than suddenly changing > them when airspeed crosses a given threshold). > > I've had success using a "low speed" and "high speed" set of gains > with linear interpolation between them. Of course, I don't know how > you could do this in flightgear. Perhaps a nasal script could do the > interpolation and update the PID gain properties? > > -Jeff
It's been done before (quite a lot, actually) using the JSBSim flight control components. As I recall, a lot of the runs were made using JSBSim as a standalone (batch) application, or integrated with another flight simulation application. You've got complete control. Jon ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
